Combination-lock



(No Model'.) Y B. FRY.

COMBINATION LOOK.

No. 365,177. Patented June 21,1887.

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UNITED STATES PATENT UFEICE.

BENJAMIN FRY, OF ERIE, PENNSYLVANIA.

COMBINATION-LOCK.

SPECIFICATION forming part of Letters Patent No. 365,177, dated June 21,1887.

Application filed Novemberll, 1886. Serial No. ilfLllT.

To all whom, it may concern.-

Be it known that I, BENJAMIN FRY, a citizen of the United States,residing at Erie, in the county of Erie and State of Pennsylvania,haveinven ted certain new and useful Improvements in CombinationLocks,and I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same, reference being hadto the accompanying drawings, and to the letters ofreference markedthereon, forming part of this specification.

My invention relates to combination-locks; and it consists in theimprovementshereinafter set forth and explained.

My invention is illustrated in the accom panying drawings, in whichFigure 1 is a view in elevation of the inside of the lock. Fig. 2 is across-section of the same on the line m min Fig. 1, and also showing asection of a catch. Fig. 3 is a View in elevation of the outside of thelock, also showing a modification of the bolt mechanism of the lock.Fig. 4 is a cross-section of the same on the line y 11 in Fig. 3, andalso showing a section of a catch.

Like letters refer to like parts in all the figures.

In the drawings, A is the plate or frame of the lock; 13 B, dialsprovided with knobs C G and also with spindles which pass through theplate A to apoint where they are adjustably secured to the serrated andslotted locking disks D D by means of the screws 0 0, these parts beingcommon in locks of this character. The back side of the plate A, Ipreferably cast with sleeves or projections E, through which thespindles connecting the dials B B and the locking-disks D D pass, bymeans whereof the locking-disks D D are retained some distance from theback of the plate A, leaving room between the plate A and the disks Dfor the operation of a spring-dog and locking-bolt mechanism. Near thefront edge and on the inside face of the plate A, centrally between thelocking-disks D D, I preferably cast lugs F F, which operate as guidesfor a bolt, G, to slide in, and on the opposite edge of the plate A, Icast a lug, a, to which the dogspring K. is secured.

(No model.)

The bolt G is provided at its outer end with a frietionroller, II, whichroller, by the outward movement of the bolt G, engages, when the door ordrawer to which the lock is secured is closed, with a ledge or catch, I,on the door or drawer frame. The inner end of the bolt G is beveled offat 1, so as to form a wedge when it comes in contact with the end of thespring K, to which the dog J is secured, so that when the bolt G ispressed back it tends to raise the end of the Spring and the dog J,attached thereto. The bolt G is also provided with a stop, 0, whichcomes into contact with the lugs F F, and thereby limits the outwardmovement of the bolt.

The spring K, I preferably secure to thelug a, on the plate A, at suchan angle that the pressure of the end thereof to which the dog J isattached is downward on the beveled or wedge-shaped end 9 of the bolt G,which tends to force the bolt G outward and retain it in that position.The dog J is secured to the inner end of the spring K, so that theraising of the end of the spring K by any backward movement of the boltG tends to raiseit against the under sides of the locking-disks D D,thus preventing the bolt G from being moved back until the lockingdisksD D are moved around, so that the dog J will pass into the slots d dtherein. To prevent the discovery of the combination upon which the lockis set, by carefully moving the disks D D around to detect the locationof the slots (1 d, I make a slight p rojeetiou,j,on the central portionof the upper edge of the dog J, which projection engages with the cogson the edges of the disks D D before the remainder of the dog J reachesthe slots 12 (I, so as to completely defeat any effort of this kind.

It is obvious that when the locking-disksD D are adjusted so that thedog J will pass into the slots (1 d a slight pull on one of the knobs Gwill cause the roller H to pass the catch I, so that the door or drawercan be opened, and, as the spring K acts automatically on the bolt G,this lock will operate not only as a look but as a spring-catch for thedoor or drawer on which it is used, and can be opened and closed atpleasure without locking it; or it can be locked, as desired.

In Figs. 3 and 4 I have shown a modifiezv I the lock is constructed andoperates as hereinbefore described.

Having thus fully described my invention,

so as to enable others skilled in the art to which it appertains toconstruct and use the same, what I claim as new, and desire to secure byLetters Patent of the United States,

l. The combination, in a combination-lock, of the dials B B and theslotted locking-disks D D, secured thereto, with the spring K, havingthe dog J thereon, and the bolt G, having a beveled inner end adapted toengage the 20 spring K, substantially as and for the purpose set forth.

2. The combination, in a combination-lock, of the dials B B and theserrated and slotted locking-disks D D,adj ustably secured thereto, withthe spring K, having the dog J, provided with the projection j thereon,and the bolt G, provided with the friction-roller H and stop e, andhaxdng the beveled inner end adapted to engage the spring K,substantially as and for the purpose set forth.

In testimony whereof I affiX my signature in presence of two witnesses.

BENJAMIN v FRY.

\Vitnesses:

H. C. GRoWELL, 7M. P. HAYEs.

